Political Group Ratings: by the HRC on gay rights
Source: HRC website
OnTheIssues.org interprets the 2005-2006 HRC scores as follows:

0% - 20%: opposes gay rights (approx. 207 members)

20% - 70%: mixed record on gay rights (approx. 84 members)

70%-100%: supports gay rights (approx. 177 members)

About the HRC (from their website, www.hrc.org):

The Human Rights Campaign represents a grassroots force of more than 700,000 members and supporters nationwide. As the largest national gay, lesbian, bisexual and transgender civil rights organization, HRC envisions an America where GLBT people are ensured of their basic equal rights, and can be open, honest and safe at home, at work and in the community.

Ever since its founding in 1980, HRC has led the way in promoting fairness for GLBT Americans. HRC is a bipartisan organization that works to advance equality based on sexual orientation and gender expression and identity.